Companies / Iron Mountain Inc
Iron Mountain Inc
Financials · FY2025
Ownership
297.7M shares outstanding · as of Jul 24, 2026
Ownership
| Insiders | 0.64% | 1,910,834 |
| 10%+ / strategic | 22.18% | 66,029,978 |
| Institutions | 81.34% | 242,141,951 |
| Public float | 0.00% | 0 |
Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 18
View all →| Insider | % of shares | Shares |
|---|---|---|
Dauten Kent PDirector | 0.41% | 1,209,573 |
Hytinen BarryEVP and CFO | 0.11% | 326,623 |
Kidd MarkEVP, GM Data Centers & ALM | 0.04% | 113,507 |
McIntosh Greg WEVP, Chief Commercial Officer | 0.03% | 85,634 |
Arway Pamela MDirector | 0.01% | 40,196 |
Ford Monte EDirector | 0.01% | 31,817 |
Matlock RobinDirector | 0.01% | 30,451 |
Rakowich Walter CDirector | <0.01% | 25,000 |
Bhargava MithuEVP, GM Digital Business Unit | <0.01% | 16,054 |
Allerton JenniferDirector | <0.01% | 13,300 |
Institutional holders 1,024
View all →| Holder | Value | % of shares |
|---|---|---|
| $4.24B | 11.28% | |
| $3.87B | 15.66% | |
| $2.24B | 5.92% | |
| $863.70M | 2.85% | |
| $662.30M | 2.68% | |
| $466.38M | 1.53% | |
| $385.13M | 1.02% | |
| $368.89M | 1.49% | |
| $367.42M | 1.49% | |
| $366.42M | 1.48% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Norges Bank 13F manager | Exit | — | $-368.89M | -4.4M -100.00% | — | high |
| Q2 2026 as of | State Street Corporation 13F manager | Add | — | $94.76M | +745K +4.41% | 17,634,044 5.92% of shares | high |
| Q1 2026 as of | AQR Capital Management, LLC 13F manager | Add | — | $91.52M | +923K +99.97% | 1,846,073 0.62% of shares | high |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | — | $82.26M | +651K +1.98% | 33,570,910 11.28% of shares | high |
| Q2 2026 as of | Deutsche Bank AG 13F manager | Add | — | $64.05M | +507K +19.95% | 3,049,079 1.02% of shares | high |
| Q4 2025 as of | Norges Bank 13F manager | Add | — | $62.68M | +756K +20.47% | 4,447,133 1.49% of shares | high |
| Q1 2026 as of | Bamco Inc /Ny 13F manager | New | — | $53.65M | +525K | 525,270 0.18% of shares | high |
| Q1 2026 as of | Clark Capital Management Group, Inc. 13F manager | New | — | $47.84M | +468K | 468,365 0.16% of shares | medium |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Cohen & Steers, Inc. | Passive13G/A | — |
| Vanguard Group Inc | Passive13G/A | — |
| Cohen & Steers, Inc. | Passive13G/A | — |
| Vanguard Portfolio Management | Passive13G | — |
| Vanguard Capital Management | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| IRM | — | 46284V101 |